Question 1167971: . There are many variations of this game. The primary variation allows you to win if the four
digits in your number are selected in any order as long as they are the same four digits as
obtained by the lottery agency. For example, if you pick four digits making the number
1265, then you will win if 1265, 2615, 5216, 6521, and so forth, are drawn. The variations
of the lottery game depend on how many unique digits are in your number. Consider the
following four different versions of this game. Find the probability that you will win this
lottery in each of these four situations.
ii. Exactly one of the digits appears twice (e.g., 1223 or 9095)
iii. Two digits each appear twice (e.g., 2121 or 5588)
Answer by Edwin McCravy(20066)   (Show Source):
You can put this solution on YOUR website!
Sorry, but you don't make it clear whether the lottery agency might obtain
the number 9969 or 4444, etc? Does the agency always obtain unique digits?
You also aren't making it clear whether in the words:
"Exactly one of the digits appears twice (e.g., 1223 or 9095)"
1. you are talking about the four digits which THE LOTTERY AGENCY obtains,
or
2. you are talking about the number that YOU select to enter.
Edwin
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